| 摘要 |
Various method and system embodiments of the present invention are directed to data and data-state-describing data structures employed in storage components of a distributed data-storage system. In one embodiment of the present invention, a hierarchical data structure stores the data state of a component data-storage system of a distributed data-storage system. In another embodiment of the present invention, a data-block address, stored in a computer-readable memory within a component data-storage system of a distributed data-storage system, includes a block identifier and additional data fields that serve to uniquely specify the addressed data block when multiple copies of the data block are stored in the component data-storage system under different redundancy schemes.
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